Frank g



(No- Model.)

F. Gr. JOHNSON.

RHGENBwwmfum. N0.'398,404. Patented Feb. 26, 1889.

lun lumai/Illy llllllll N, PETERS. Phnlo-Lithagnphor. washmgwn. DA c.

WITNESSES: x WM/OMT "d MM UNITED STATES ATnNT rricm FRANK G. JOHNSON, F NFHV YORK, N. Y.

REGENERATIVE GASBURNER.

SPECIFICATION forming part oi Letters Patent No. 398,404, dated February 26, 1889. Application filed February l5, 1888. Serial No. 264,118. (No model.)

T0 all whom, it may concern,.- -Be it known that I, FRANK Ur. JOHNsON, a

4citizen of the United States, residing in the city, county, and'State of New York, have invent-ed a new and useful Improvement in llluminating-Gas Heaters, of which the following is a specification.

My invention relates to the heating ot' illuminatinggas at or near the point of consuinption, for the purpose of in creasing its luminosity when burned, which I accomplish by causing the gas to pass through a long tortuous passage located j ust above the blaze ofthe gas and in the heat thereof, whereby it (the gas) becomes intensely heated and when ignited far more luminous. I am aware that devices for this purpose have been heretofore employcd; but the special object of my invention is to more intensely heat the gas than has been heretofore accomplished, as the more it is heated the greater becomes its luminosity. I attain this object b v means of the device illustrated in' the acoompanyin drawings, in

whiclr- Figure l is a transverse section on the line .fr 5r; of Fig. el; Figs and 3, interior views of the two corresponding right and left parts of the device, showing the course of the passage through which the passes from the point of ingress to the point of egress, which two parts, when joined together, exactly correspend 5 Fi 4t, a diaphragm of thin sheet metal which completely separates the two parts, (shown by Figs. 2 and 3,) except it (the dia` phragm) has a communicating passage, d; and Fig. o', a partial transverse section on the line fg y of Fig. fl, showing the communicating passage d through the diaphragm.

Similar lettcrsrcfer to similar pari s throughout the several views.

A is the supply gas-pipe; A, thc pipe, which conveys the gas to the burners under neath and after it passes through the apparatus; li, the right-hand part, and (l the lefthand part, of the device; D, the thin diaphragm, (made, preferably, ot' thin shcet-cop perg) c e, Fig. 5, one of a series of rivets for securely iiasteningthe two parts B (.l together, as further indicated by several holes in the outer rim of Figs@ and 3; d,an opening or hole in the diaphragm D, which constitutes the only communica-tion between the said right and left parts, B (l. ZJ b b', Fig. 3 and c c c', Fig. 2, are a series of partition-ribs, which alternately terminate on the partitionline c c, Fig. 2, between which partitioirribs (in both parts B C) are the tortuous passages wherein the gas passes through the device to become heated. b, Fig. 3, is the opening through which the gas passes from the supplyT pipe A into the upper half, B, of the device; and c, Fig. 2, the opening through which the gas passes out of the left-hand part C.

It will now be seen that if the right part, B, is turned over and laid upon the left part, C, the partition-ribs b b, and the central ingressopening l) ot part B will exactly register with the partition-ribs c c andthe central egressopening c of part C. It' now the diaphragm D D, Fig. il, be placed between the parts B and C, so that the communicating opening d in and through the diaphragm D D falls at d in the parts B and C (seen in Figs. 2 and 3) and the two parts B and be tightly riveted together, then no gas can enter and pass out of and through the apparatus without entering from the supply-pipe A into and through the ingressopening h, Fig. 3, and passing around and around back and forth, as indicated by the arrow at d in Fig. 5, and so into the lower or left part, C, of the device, whence it passes around and around back and forth to the egressopening c into the pipe A', Fig. 2, as indicated by the arrows, which from 'ingress to egress causes the gas to bo submitted to the heat of its iiame while'it passes through the tortuous passage between the tortuous partition of the two parts B and C, first, from the center to the circumference in the right part, B, and then in the reverse direction bach from the circumference to the center in the left part, @,which in a perpendicular distance of half an inch submit-s t-he to the heat of its llame through a tortuous horizontal passage of six feet or so in lengtli,wliile by an increase oi' the diameter of the apparatus these tortuous horizontal passages may be greatly eX- tendeil, according lo the number of gas-jets to be supplied. p i

To still 'further utilize the heat of the burning gas for the purpose of intensifying its luminosity when burned, l employ a cover,E

IOO

E, Fig. l,which is placed over the device above described. This cover consists of an inverted Cap spun or stamped out of a single piece of sheet copper or brass, or other suitable metal, which will stand intense heat,which, as shown in Fig. l, is placed over the above-described apparatus, so as to leave a space between it and the cap both on top and sides, and extending down on the sides some distance below the device above described.

The cap E subserves the twofold purpose of, rst, concentrating and retaining the heated air in contact with the plates B C, and, seeond, of partially enveloping and concealing said plates, which are preferably formed 'of cast-iron,which is durable, but not ornamental in appearance.

In the format-ion of the tortuous ribs and resultant gas-passages I do not limit myself to any particular form of the same, as they may be variously arranged to accomplish the same results without materiallyaffeetin g Wh at I claim as new and useful. I am aware,how ever, that heati ng illu min atin g-gas by the heat of its own combustion is not new, as shown,

` IVhatI do claim as new and useful, and desire to secure by Letters Patent, is

l. In an illuminating-gas heater, the combination of the corresponding right and left parts,B and C, provided with a continuous 35 tortuous rib from center to circumference, forming a corresponding continuous tortuous gas-passage from center to circumference, and the diaphragm D, having the communicating opening d, substantially in the manner and 4o for the purposes set forth.

2. In an illuminating-gas heater, the com bination of the corresponding right and left parts, B and C, provided with a continuous tortuous rib from center to eircumferencejwig forming a corresponding continuous tortuous gas-passage from center to circumference, and the diaphragm D, having the communicating opening CZ and cap E E, substantially in the manner and for the purpose described.

FRANK G. JOHNSON. Witnesses:

CLARENCE A. SEARS, W. T. B. MILLIKEN. 

